CHEMISTRY COMMUNITY

derek1d

Thank you, but how based on the calculations of concentration are we able to tell? The solutions manual says because of the larger equilibrium concentration, but how does the equilibrium concentration relate back to thermodynamic stability?

derek1d

Along with this, is there any difference between Ka and pKa? Does the HH equation mean that we will be using pKa?

derek1d

Does counting the bonds and classifying them based upon the total number of shared electrons stand across all cases? I have come across examples where a linear structure was given and the correct hybridization turned out to be sp^3. Can someone help clarify why that would be?

derek1d

To get the oxidation state of the central atom, you first would need to find the formal charge of all of the ligands attached to the complex. Oxidation state of CN^- is -1 and there is one (1 x -1 = -1), and oxidation state of NH3 is 0 and there are 3 (3 x 0 =0). Once you have those charges you can ...

derek1d

When ligands are bonded to a metal or transition metal, they are bound by sharing electrons. Since it only takes 2 electrons to form a bond that can be shared between the complex and the ligand, double and triple bonds are not required as far as I know. Not completely sure though, hope this helped!

derek1d

Separating the ligands into groups also helps, I separated them by their charge. This way you can more easily digest all of the information while also memorizing the charge of each ligand while you are trying to remember the name!

derek1d

I am working on the same problem and while the explanation helps I still am confused on whether or not we are expected to know the chemical formulas for these salts? I understand how we deduce the subscripts, but are we supposed to know that for example, ammonium ion is NHsub4? Or where do we get th...

derek1d

I don't believe so. Apparently, the test next Tuesday will cover all new material since Exam 1 but not including topics from Exam 1 like the periodic trends.

derek1d

Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.

derek1d

A question on notation, is there any way to tell whether an electron has a lone pair from the molecular formula? (the E in the A,X,E)

derek1d

What exactly do dipole moments measure? What about dipole moments allow them to cancel each other? Sorry, this topic is not the clearest to me if someone could please explain.

derek1d

For Problem 2.49 "Predict the number of valence electrons present in each of the following atoms (include the outermost d-electrons: (a) N; (b) Ag; (c) Nb; (d) W." What trend are we expected to see in order to identify the number of valence electrons? The atomic number? Is there also somet...

derek1d

Will there be pre/post assessment modules uploaded to the website as well as video modules to use as resources for the material covered in Chapters 2 and 3?

derek1d

When calculating formal charge, how do we tell apart which electrons are valence from those that are lone or shared? Aren't lone and shared electrons also valence electrons? If not, how can we distinguish them to utilize the formula FC=V-(L+S/2)? Thank you

derek1d

Won't the mass of the electron need to be given in order to solve A) of this problem?

derek1d

Same question, I get confused on which to pay attention to when putting significant figures in the final answer. From my understanding though, the significant figures you begin with is what should be present in your final answer. Again, I could be misunderstood. Does someone mind clarifying this?

derek1d

Will frequency always be given in problems that ask to calculate wavelength?

derek1d

Under which circumstances do we utilize the formula E=hc/lambda that incorporates the lambda?

derek1d

For intermediate calculations what are the general rules for sig figs in a problem with add/sub and mult/divis?
Is it best to not worry about sig figs intermediately in a mixed type of problem or should we adjust for sig figs throughout?

CHEMISTRY COMMUNITY

Search found 19 matches

Re: 11.45 Part C

Re: Henderson-Hasselbalch Equation

Re: Bond Order

Re: Self-Test 2 Problem 4

Re: Polydentates

Re: Naming Ligands

Re: Writing formulas for compounds [ENDORSED]

Re: Electron Affinity

Re: Post All Chemistry Jokes Here

Re: Difference between VSEPR and MOT

Re: How to display polar dipole moments in VSEPR model

Re: Exercise 2.29

Pre/Post Assessment & Video Module

Formal Charge

Re: How to calculate the kinetic energy, energy and frequency? [ENDORSED]

Re: sig figs in electronic transition problem

Re: De Broglie Wavelength

Re: Photoelectric Effect

Re: Sig Figs in a problem with addition & multiplication [ENDORSED]